[en] FeRh and its first-order phase transition can open new routes for magnetic hybrid materials and devices under
the assumption that it can be exploited in ultra-thin-film structures. Motivated by experimental measurements showing an unexpected increase in the phase transition temperature with decreasing thickness of FeRh on top of MgO, we develop a computational model to investigate strain effects of FeRh in such magnetic structures. Our theoretical results show that the presence of theMgO interface results in a strain that changes the magnetic configuration which drives the anomalous behavior.
Disciplines :
Physics
Author, co-author :
Ostler, Thomas ; Université de Liège > Département de physique > Physique des matériaux et nanostructures
Craig, Barton
Thomas, Thomson
Gino, Hrkac
Language :
English
Title :
Modeling the thickness dependence of the magnetic phase transition temperature in thin FeRh film
Publication date :
16 February 2017
Journal title :
Physical Review. B, Condensed Matter
ISSN :
0163-1829
eISSN :
1095-3795
Publisher :
American Institute of Physics, New York, United States - New York
M. Fallot and R. Hocart, Sur l'apparition du ferromagnétisme par élévation de temperature dans alliages de fer et de rhodium, Rev. Sci. 77, 498 (1939). RESCA7 0370-4556
J. S. Kouvel, Unusual nature of the abrupt magnetic transition in FeRh and its pseudobinary variants, J. Appl. Phys. 37, 1257 (1966). 10.1063/1.1708424
R. Y. Gu and V. P. Antropov, Dominance of the spin-wave contribution to the magnetic phase transition in FeRh, Phys. Rev. B 72, 012403 (2005). 10.1103/PhysRevB.72.012403
S. O. Mariager, Structural and Magnetic Dynamics of a Laser Induced Phase Transition in FeRh, Phys. Rev. Lett. 108, 087201 (2012). 10.1103/PhysRevLett.108.087201
G. Ju, Ultrafast Generation of Ferromagnetic Order via a Laser-Induced Phase Transformation in FeRh Thin Films, Phys. Rev. Lett. 93, 197403 (2004). 10.1103/PhysRevLett.93.197403
J. Barker and R. W. Chantrell, Higher-order exchange interactions leading to metamagnetism in FeRh, Phys. Rev. B 92, 094402 (2015). 10.1103/PhysRevB.92.094402
P. M. Derlet, Landau-Heisenberg Hamiltonian model for FeRh, Phys. Rev. B 85, 174431 (2012). 10.1103/PhysRevB.85.174431
J. U. Thiele, S. Maat, and E. E. Fullerton, FeRh/FePt exchange spring films for thermally assisted magnetic recording media, Appl. Phys. Lett. 82, 2859 (2003). 10.1063/1.1571232
S. P. Bennett, Direct evidence of anomalous interfacial magnetization in metamagnetic Pd doped FeRh thin films, Sci. Rep. 5, 9142 (2015). 10.1038/srep09142
V. D. Buchel'nikov, Magnetic shape-memory alloys: phase transitions and functional properties, Phys.-Usp. 49, 871 (2006). 10.1070/PU2006v049n08ABEH006081
L. C. Phillips, Local electrical control of magnetic order and orientation by ferroelastic domain arrangements just above room temperature, Sci. Rep. 5, 10026 (2015). 10.1038/srep10026
S. Maat, J.-U. Thiele, and E. E. Fullerton, Temperature and field hysteresis of the antiferromagnetic-to-ferromagnetic phase transition in epitaxial FeRh films, Phys. Rev. B 72, 214432 (2005). 10.1103/PhysRevB.72.214432
M. Loving, Tailoring the FeRh magnetostructural response with Au diffusion, J. Appl. Phys. 112, 043512 (2012). 10.1063/1.4747921
L. I. Vinokurova, A. V. Vlasov, and M. Pardavi-Horváth, Pressure effects on magnetic phase transitions in FeRh and FeRhIr alloys, Phys. Status Solidi B 78, 353 (1976). 10.1002/pssb.2220780136
T. Naito, I. Suzuki, M. Itoh, and T. Taniyama, Effect of spin polarized current on magnetic phase transition of ordered FeRh wires, J. Appl. Phys. 109, 07C911 (2011). 10.1063/1.3553941
R. Barua, Tuning the magnetostructural phase transition in FeRh nanocomposites, J. Appl. Phys. 113, (2013). 10.1063/1.4774282
F. Pressacco, Stable room-temperature ferromagnetic phase at the FeRh(100) surface, Sci. Rep. 6, 22383 (2016). 10.1038/srep22383
R. O. Cherifi, Electric-field control of magnetic order above room temperature, Nature Mater. 13, 345 (2014). 10.1038/nmat3870
T. Goto, Growth of FeRh thin films and magnetic properties of FePt/FeRh bilayers, J. Magn. Magn. Mater. 272-276, E791 (2004). 10.1016/j.jmmm.2003.12.686
S. P. Bennett, Giant controllable magnetization changes induced by structural phase transitions in a metamagnetic artificial multiferroic, Sci. Rep. 6, 22708 (2016). 10.1038/srep22708
G. C. Han, Magnetic stability of ultrathin FeRh films, J. Appl. Phys. 113, 17C107 (2013). 10.1063/1.4794980
J. Cao, Magnetization behaviors for FeRh single crystal thin films, J. Appl. Phys. 103, 21 (2008). 10.1063/1.2828812
C. W. Barton, T. A. Ostler, D. Huskisson, C. J. Kinane, S. J. Haigh, G. Hrkac, and T. Thomson, Substrate induced strain field in FeRh epilayers grown on single crystal MgO (001) substrates, Sci. Rep. (to be published).
J. Kudrnovský, V. Drchal, and I. Turek, Physical properties of FeRh alloys: The antiferromagnetic to ferromagnetic transition, Phys. Rev. B 91, 014435 (2015). 10.1103/PhysRevB.91.014435
V. L. Moruzzi and P. M. Marcus, Antiferromagnetic-ferromagnetic transition in FeRh, Phys. Rev. B 46, 2864 (1992). 10.1103/PhysRevB.46.2864
J. A. Ricodeau and D. Melville, Model of the antiferromagnetic-ferromagnetic transition in FeRh alloys, J. Phys. F: Met. Phys. 2, 337 (1972). 10.1088/0305-4608/2/2/024
L. M. Sandratskii and P Mavropoulos, Magnetic excitations and femtomagnetism of FeRh: A first-principles study, Phys. Rev. B 83, 174408 (2011). 10.1103/PhysRevB.83.174408
S. Jekal, S. H. Rhim, S. C. Hong, W.-j. Son, and A. B. Shick, Surface-termination-dependent magnetism and strong perpendicular magnetocrystalline anisotropy of an FeRh(001) thin film, Phys. Rev. B 92, 064410 (2015). 10.1103/PhysRevB.92.064410
T. A. Ostler, Crystallographically amorphous ferrimagnetic alloys: Comparing a localized atomistic spin model with experiments, Phys. Rev. B 84, 024407 (2011). 10.1103/PhysRevB.84.024407
O. N. Mryasov, Magnetic interactions and phase transformations in FeM, (Equation presented) ordered alloys, Phase Transitions 78, 197 (2005). 10.1080/01411590412331316591
B. Skubic, J. Hellsvik, L. Nordström, and O. Eriksson, A method for atomistic spin dynamics simulations: implementation and examples, J. Phys.: Condens. Matter 20, 315203 (2008). 10.1088/0953-8984/20/31/315203
T. L. Gilbert, A phenomenological theory of damping in ferromagnetic materials, IEEE Trans. Magn. 40, 3443 (2004). 10.1109/TMAG.2004.836740
W. F. Brown, Thermal fluctuations of a single-domain particle, Phys. Rev. 130, 1677 (1963). 10.1103/PhysRev.130.1677
O. G. Mouritsen, B. Frank, and D. Mukamel, Cubic Ising lattices with four-spin interactions, Phys. Rev. B 27, 3018 (1983). 10.1103/PhysRevB.27.3018
E. Mancini, Magnetic phase transition in iron-rhodium thin films probed by ferromagnetic resonance, J. Phys. D: Appl. Phys. 46, 245302 (2013). 10.1088/0022-3727/46/24/245302
Z. Q. Liu, Full Electroresistance Modulation in a Mixed-Phase Metallic Alloy, Phys. Rev. Lett. 116, 097203 (2016). 10.1103/PhysRevLett.116.097203
S. B. Roy, P. Chaddah, V. K. Pecharsky, and K. A. Gschneidner, Overview No. 145 Metamagnetic transitions, phase coexistence and metastability in functional magnetic materials, Acta Mater. 56, 5895 (2008). 10.1016/j.actamat.2008.08.040